Here’s a two-page CBS press release, dated August 7th, 1972, for the premiere of M*A*S*H. Click on either of the images for larger versions:
I’ve added the press release to my Promoting the Premiere feature, where you can also find a CBS press image for the series.
I was confused by reading that Wayne Rogers was in No Time for Sergeants, because I didn’t remember seeing him in it, but I read it over again and overlooked that he was in the play, not the movie.
Jamie Farr, on the other hand, was in the movie in an uncredited bit part as a co-pilot… his nose is what gave him away, lol.